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1. What is the molality of a solution in which 0.135 moles of CO2 is dissolve...
Chemistry, 16.03.2020 21:28 pandamaknae2003
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1. What is the molality of a solution in which 0.135 moles of CO2 is dissolved in 490mL of water? (1kg of water = 1L of water)
2. What is the molality of a solution in which 23g of NaCl are dissolved in 250g of water?
3. How many moles of HC1 are needed to prepare a 3m (3molal) solution with 1.5Kg of water?
Answers: 2
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Select all the correct answers.which compounds have the empirical formula ch20? (multiple answers)a.c2h4o2b.c3h603c.ch2o2d.c5h1005e.c6h1206
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The kw for water at 0 °c is 0.12× 10–14 m2. calculate the ph of a neutral aqueous solution at 0 °c.
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Why do the strengths of london (dispersion) forces generally increase with increasing molecular size? choose one: a. heavier atoms have stronger attractions for each other than lighter atoms. b. dispersion forces are all equal in magnitude; there is no size dependence. c. dispersion forces arise from the attraction between the nuclei of atoms, and larger molecules have larger nuclei. d. dispersion forces arise from dipoles caused by the electron distribution being distorted. larger molecules have more electrons and, therefore, more distortions and a bigger force. e. dispersion forces depend on distance. larger molecules are farther apart and so the forces are smaller.
Answers: 2
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Of element x has 22 protons, how many electrons does it have
Answers: 1
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